otometrics Madsen Xeta, Справочное руководство

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Radiated RF
IEC 61000-4-3 150 kHz to 80 MHz outside ISM
bands
a
3 V/m
80 MHz to 2.5 GHz
3 V/m Portable and mobile RF communications equip-
ment should be used no closer to any part of
MADSEN Xeta, including cables, than the recom-
mended separation distance calculated from the
equation applicable to the frequency of the trans-
mitter.
Recommended separation distance:
d = 1.2
d = 1.2 for 80 MHz to 800 MHz
d = 2.3 for 80 MHz to 2.5 GHz,
where P is the maximum output power rating of
the transmitter in watts (W) according to the trans-
mitter manufacturer and d is the recommended
separation distance in metres (m).
Field strengths from fixed RF transmitters, as
determined by an electromagnetic site survey,
a
should be less than the compliance level in each
frequency range.
b
Interference may occur in the vicinity of equip-
ment marked with this symbol:
Note 1
: At 80 MHz and 800 MHz the separation distance for the higher frequency range applies.
Note 2 : These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from structures, objects and
people.
a. The ISM (industrial, scientific and medical) bands between 150 kHz and 80 MHz are 6.765 MHz to 6.795 MHz; 13.553 MHz to 13.567 MHz; 26.957 MHz to 27.283
MHz; and 40.66 MHz to 40,70 MHz.
b. The compliance levels in the ISM frequency bands between 150 kHz and 80 MHz and in the frequency range 80 MHz to 2.5 GHz are intended to decrease the
likelihood that mobile/portable communications equipment could cause interference if it is inadvertently brought into patient areas. For this reason, an
additional factor of 10/3 is used in calculating the recommended separation distance for transmitters in these frequency ranges.
c. Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and land mobile radios, amateur radio, AM and FM radio
broadcast and TV broadcast cannot be predicted theoretically with accuracy. To assess the electromagnetic environment due to fixed RF transmitters, an
electromagnetic site survey should be considered. If the measured field strength in the location in which MADSEN Xeta is used exceeds the applicable RF com-
pliance level above, the MADSEN Xeta should be observed to verify normal operation. If abnormal performance is observed, additional measures might be
necessary, such as reorienting or relocating MADSEN Xeta.
d. Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
100 Otometrics - MADSEN Xeta
15 Technical specifications